我有以下p：datatable，它包含两个调用View和Add对话框的按钮。 问题出在“添加”对话框中，似乎没有为任何实体对象设置属性。
当我在ChildrenController.java中的save（）方法中休息时，所有值都为＆＃39; null＆＃39;。 我在用： PrimeFaces 5.1 | Mojarra 2.2.7 | Glassfish 4.1 |
ChildrenDataTable.xhtml
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:ui="http://java.sun.com/jsf/facelets">
<h:form id="form1">
<p:dataTable var="child" value="#{childrenController.children}"
scrollable="true"
scrollHeight="500">
<p:column>
<f:facet name="header">First Name</f:facet>
<h:outputText value="#{child.firstName}" />
</p:column>
<p:column>
<f:facet name="header">Last Name</f:facet>
<h:outputText value="#{child.lastName}" />
</p:column>
<p:column>
<f:facet name="header">Parent Name</f:facet>
<h:outputText value="#{child.parent.firstName}" />
</p:column>
<p:column>
<f:facet name="header">Parent Last Name</f:facet>
<h:outputText value="#{child.parent.lastName}" />
</p:column>
<p:column style="width:32px;text-align: center">
<p:commandButton update=":mainForm:form1:childDetail"
oncomplete="PF('childDialog').show()"
process="@this"
icon="ui-icon-search"
title="View">
<f:setPropertyActionListener value="#{child}"
target="#{childrenController.selectedChild}" />
</p:commandButton>
</p:column>
<p:column style="width:32px;text-align: center">
<p:commandButton onclick="PF('childAddDialog').show()"
icon="ui-icon-person"
title="Add">
</p:commandButton>
</p:column>
</p:dataTable>
<!-- Dialog for the View button-->
<p:dialog header="Child Info"
widgetVar="childDialog"
modal="false"
showEffect="fade"
hideEffect="fade"
resizable="false">
<p:outputPanel id="childDetail" style="text-align:center;">
<p:panelGrid columns="2"
rendered="#{not empty childrenController.selectedChild}"
columnClasses="label,value">
<h:outputText value="First Name:" />
<h:outputText value="#{childrenController.selectedChild.firstName}" />
<h:outputText value="Last Name:" />
<h:outputText value="#{childrenController.selectedChild.lastName}" />
<h:outputText value="Birth Date:" />
<h:outputText value="#{childrenController.selectedChild.dateOfBirth}"/>
<h:outputText value="Medical Info:" />
<h:outputText value="#{childrenController.selectedChild.medicalInfo}" />
</p:panelGrid>
</p:outputPanel>
</p:dialog>
<!--Dialog for the Add button-->
<p:dialog header="Register Child"
widgetVar="childAddDialog"
modal="false"
showEffect="fade"
hideEffect="fade"
resizable="false">
<p:outputPanel id="childRegister" style="text-align:center;">
<p:panelGrid columns="2" >
<f:facet name="header">
Child info
</f:facet>
<h:outputText value="First Name:"/>
<h:inputText value="#{childrenController.child.firstName}"
required="true"/>
<h:outputText value="Last Name:"/>
<h:inputText value="#{childrenController.child.lastName}"
required="true"/>
<h:outputText value="Birth Date:"/>
<h:inputText value="#{childrenController.child.dateOfBirth}"
required="true"/>
<h:outputText value="Medical Info:"/>
<p:inputTextarea value="#{childrenController.child.medicalInfo}"
rows="5" cols="30" counter="display" maxlength="128"
counterTemplate="{0} characters remaining." autoResize="false"/>
<h:outputText id="display" />
</p:panelGrid>
<p:panelGrid columns="2" >
<f:facet name="header">
Parent info
</f:facet>
<h:outputText value="First Name:"/>
<h:inputText value="#{childrenController.parent.firstName}"
required="true"/>
<h:outputText value="Last Name:"/>
<h:inputText value="#{childrenController.parent.lastName}"
required="true"/>
<h:outputText value="Username:"/>
<h:inputText value="#{childrenController.user.username}"
required="true"/>
<h:outputText value="Password1:"/>
<p:password id="pwd1" value="#{childrenController.password1}"
match="pwd2"
required="true"/>
<h:outputText value="Password2:"/>
<p:password id="pwd2" value="#{childrenController.user.password}"
required="true"/>
<p:commandButton actionListener="#{childrenController.save()}"
value="Save"
process="@this"
oncomplete="childAddDialog.hide()">
</p:commandButton>
</p:panelGrid>
</p:outputPanel>
</p:dialog>
</h:form>
</ui:composition>
ChildrenController.java
@Named
@SessionScoped
public class ChildrenController implements Serializable{
// This final string will be used to set the loginn role to parent
private static final String parentRole = "parent";
private String password1;
@EJB
private ChildEJB childEJB;
private Child currentChild;
private Child child = new Child();
@EJB
private ParentEJB parentEJB;
private Parent parent = new Parent();
@EJB
private RoleEJB roleEJB;
private Role role = new Role(parentRole);
@EJB
private UserEJB userEJB;
private User user = new User();
public Child getCurrentChild() {
return currentChild;
}
public void setCurrentChild(Child currentChild) {
this.currentChild = currentChild;
}
public Child getChild() {
return child;
}
public void setChild(Child child) {
this.child = child;
}
public Parent getParent() {
return parent;
}
public void setParent(Parent parent) {
this.parent = parent;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public Role getRole() {
return role;
}
public void setRole(Role role) {
this.role = role;
}
public Child getSelectedChild() {
return selectedChild;
}
public void setSelectedChild(Child selectedChild) {
this.selectedChild = selectedChild;
}
private Child selectedChild;
public List<Child> getChildren() {
return childEJB.findAll();
}
public String getPassword1() {
return password1;
}
public void setPassword1(String password1) {
this.password1 = password1;
}
public void save(){
// Map the parent to the child and vice verca
parent.addChild(child);
child.setParent(parent);
// Persist the Parent
parent = parentEJB.addNew(parent);
// Persist the Child
child = childEJB.addNew(child);
// This will set the username for the parent role
role.setUsername(user.getUsername());
// This will set the role for the new username
user.setRole(role);
// This will map that the login belongs to a Parent
user.setParent(parent);
// Persist the new User
user = userEJB.addNew(user);
}
}
堆栈跟踪
Warning: A system exception occurred during an invocation on EJB ParentEJB, method: public entity.Parent EJB.ParentEJB.addNew(entity.Parent)
Warning: javax.ejb.EJBException
at com.sun.ejb.containers.EJBContainerTransactionManager.processSystemException(EJBContainerTransactionManager.java:748)
at com.sun.ejb.containers.EJBContainerTransactionManager.completeNewTx(EJBContainerTransactionManager.java:698)
at com.sun.ejb.containers.EJBContainerTransactionManager.postInvokeTx(EJBContainerTransactionManager.java:503)
at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4566)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2074)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2044)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:220)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
at com.sun.proxy.$Proxy250.addNew(Unknown Source)
at EJB.__EJB31_Generated__ParentEJB__Intf____Bean__.addNew(Unknown Source)
at mb.ChildrenController.save(ChildrenController.java:110)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at javax.el.ELUtil.invokeMethod(ELUtil.java:332)
at javax.el.BeanELResolver.invoke(BeanELResolver.java:537)
at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:256)
at com.sun.el.parser.AstValue.invoke(AstValue.java:283)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304)
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:147)
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:813)
at javax.faces.component.UICommand.broadcast(UICommand.java:300)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.validation.ConstraintViolationException: Validation failed for classes [entity.Parent] during persist time for groups [javax.validation.groups.Default, ]
List of constraint violations:[
ConstraintViolationImpl{interpolatedMessage='may not be null', propertyPath=lastName, rootBeanClass=class entity.Parent, messageTemplate='{javax.validation.constraints.NotNull.message}'}
ConstraintViolationImpl{interpolatedMessage='may not be null', propertyPath=firstName, rootBeanClass=class entity.Parent, messageTemplate='{javax.validation.constraints.NotNull.message}'}
]
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:160)
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:95)
at org.hibernate.action.internal.EntityIdentityInsertAction.preInsert(EntityIdentityInsertAction.java:202)
at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:91)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:480)
at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:191)
at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:175)
at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:210)
at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:324)
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:288)
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:194)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125)
at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:84)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:206)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:149)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:807)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:780)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:785)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1181)
at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:287)
at EJB.ParentEJB.addNew(ParentEJB.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1081)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1153)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:4786)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:656)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:46)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:52)
at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doCall(SystemInterceptorProxy.java:163)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:140)
at sun.reflect.GeneratedMethodAccessor168.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:369)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:4758)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:4746)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
... 54 more
答案 0 :(得分：0)
通过将p：commandButton放在对话框的p：panelGrid中来解决问题，这对我来说完全没有意义！无论如何，这里是对话框的样子：
<h:form id="formName">
<p:dialog>
<p:panelGrid>
<p:commandButton process="@this :formName" ajax="false" actionListener="#{bean.method()}"/>
</p:panelGrid>
</p:dialog>
</h:form>
编辑：编辑后的代码更具可读性
答案 1 :(得分：0)
您在问题的代码中没有process您的组件。你在那里用自己的答案解决问题的方法是将form包括在要处理的UIComponent列表中。这意味着JSF不会查看form中的所有输入组件，以及为什么它不会检索您在这些字段中输入的任何值以在备份bean中设置它们。
为了更好地了解流程的含义，您可以查看at this question。